//
// Created by LE on 2021/11/9.
//19*19乘法表

#include<stdio.h>
int main()
{
    int i,j;
    for (i=1;i<20;i++){
        for(j=1;j<=i;j++){
            printf("%d*%d=%d ", i, j, i * j);
        }
        printf("\n");
    }
    return 0;
}
